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Finding the Fourth Proportional to 168,183,112.80, 252,062,092.80 and 81,735,376.80

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Solution

The fourth proportional to 168,183,112.80, 252,062,092.80 and 81,735,376.80 is: 122,499,755.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,183,112.80 : 252,062,092.80 = 81,735,376.80 : x
  2. Step 2: Convert to fraction form
    168,183,112.80/252,062,092.80 = 81,735,376.80/x
  3. Step 3: Cross multiply
    168,183,112.80x = 252,062,092.80 × 81,735,376.80
  4. Step 4: Simplify right side
    168,183,112.80x = 20,602,390,132,004,568
  5. Step 5: Solve for x
    x = 20,602,390,132,004,568/168,183,112.80
  6. Step 6: Final answer
    x = 122,499,755.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.